12 Free Tools

Free IT Tools
Built by Working Engineers

These are the utilities our team reaches for during real client work: subnetting a new office, checking why a certificate expired, generating credentials for a handover. No signup, no usage limits, and nothing you enter is sent to a server or stored.

Open Subnet Calculator Talk to an Engineer

Network and Infrastructure

Planning and Troubleshooting Networks

Sizing a network, tracing a resolution problem, or working out what an SLA number actually costs you in downtime.

Subnet Calculator

Calculate CIDR notation, IP ranges, usable hosts, broadcast address, and wildcard mask. The one you want open when you are carving up an office network.

What Is My IP and IP Lookup

See your public IP, ISP, location, browser, and OS. Look up any address for geolocation, ASN, and reverse DNS.

DNS Lookup Guide

Every DNS record type explained with examples: A, AAAA, MX, CNAME, TXT, SPF, DKIM, DMARC, NS, SOA, PTR, and SRV.

Bandwidth Calculator

Estimate file transfer time, required bandwidth, and real-world throughput with protocol overhead. Converts between Mbps, MBps, and Gbps.

Uptime and SLA Calculator

Convert SLA percentages into real downtime, estimate what that downtime costs, and match uptime targets to how critical a system actually is.

Base64 Encoder and Decoder

Encode text to Base64, decode it back, and convert files into Base64 data URIs.

Security and Developer

Credentials, Certificates and Code

Generating something safely, verifying something is what it claims to be, or making sense of a payload.

Password Generator

Create random passwords with strength scoring, entropy calculation, crack time estimates, and bulk generation for onboarding.

SSL Certificate Checker

Check any domain for expiry date, issuer, chain of trust, protocol version, and overall security grade.

Hash Generator and Checksum

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files, and verify file integrity after a transfer.

JSON Formatter and Validator

Beautify, minify, and validate JSON with syntax highlighting and error detection.

Regex Tester

Test regular expressions with real time match highlighting, capture groups, and a library of common IT patterns.

Cron Expression Generator

Build cron schedules visually, with a human-readable description and the next five run times so you can confirm it does what you meant.

How They Work

No Signup, No Storage, No Catch

We built these for our own engineers first. Publishing them costs us nothing and saves everyone a search.

Runs in Your Browser

Calculations happen on your machine. Passwords, hashes, and anything you paste stay on your device rather than travelling to us.

No Account Required

No email wall, no trial, no usage cap. Open the page and use it. We would rather you remember where the good subnet calculator lives.

Maintained, Not Abandoned

These are part of our own daily toolkit, so when something is wrong or missing we notice quickly and fix it.

Toronto Managed IT

Want the Team Behind the Tools?

If you are subnetting your own office and chasing your own certificate renewals, there is a version of this where you do not have to. Echoflare handles managed IT for businesses across the GTA.

Talk to an Engineer Managed IT Services

Free IT ToolsBuilt by Working Engineers

Planning and Troubleshooting Networks

Credentials, Certificates and Code

No Signup, No Storage, No Catch

Want the Team Behind the Tools?

Free IT Tools
Built by Working Engineers